What are you afraid of? Snakes? Spiders? Heights? This After Dark event investigated the psychology and biology of fear, and included Damian Cooksey confronting his fear by demonstrating the sport of highlining far above visitors’ heads.

Amy Williams, chair of Fashion at San Francisco's California College of Arts encourages the creative spirit of her students through creation of opulent gowns, made in a day with just pattern makers tissue and tape. The result is not only an education for students, but also a playful and performative experience in the process of fashion creation.

This week's secret ingredient was triangles! Cheer on the competitors in this zany science cook-off. Teachers compete before a live audience at the Exploratorium for the revered title, "Iron Science Teacher."

This week's secret ingredient was leaves! This week's secret ingredient was triangles! Cheer on the competitors in this zany science cook-off. Teachers compete before a live audience at the Exploratorium for the revered title, "Iron Science Teacher."

Webcasts made possible through the generosity of the Gordon and Betty Moore Foundation, the Jim Clark Endowment for Internet Education, the McBean Family Foundation.

Bandwidth and infrastructure support for connectivity to the California Research and Education Network and to other Internet2-connected networks provided by the Corporation for Educational Networks Initiatives in California (CENIC).